Title:
PM検出装置
Document Type and Number:
Japanese Patent JP5440707
Kind Code:
B2
Abstract:
An object of the present invention is to reliably detect clogging in a cover even during a period corresponding to a dead zone of a detection apparatus. A PM sensor includes an element section, an element temperature detection section, a heater, and an element cover. An ECU detects clogging in the element cover based on a difference between an element temperature and an exhaust temperature when the exhaust temperature rises. Furthermore, the ECU detects clogging in the element cover based on temperature rising characteristics of the element section observed when the element section is heated by the heater. Thus, even during the period corresponding to the dead zone of the PM sensor, clogging in the element cover can be reliably detected, thus improving the reliability of the sensor.
Inventors:
Daiki Nishijima
Application Number:
JP2012532776A
Publication Date:
March 12, 2014
Filing Date:
September 08, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01N15/06; G01N27/04
Domestic Patent References:
| JPH10177005A | 1998-06-30 | |||
| JP2008502892A | 2008-01-31 | |||
| JP2005248760A | 2005-09-15 | |||
| JPS588709U | 1983-01-20 | |||
| JP2008064621A | 2008-03-21 | |||
| JPS63134122U | 1988-09-02 |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi